Add metatracing to trace perfetto itself.

Bug: 78765090
Change-Id: Ic1514d4040a78175cc9fd91526f26fc2d6937d5c
diff --git a/Android.bp b/Android.bp
index 59bc206..501bc8e 100644
--- a/Android.bp
+++ b/Android.bp
@@ -31,6 +31,7 @@
     ":perfetto_protos_perfetto_trace_zero_gen",
     ":perfetto_src_ipc_wire_protocol_gen",
     "src/base/file_utils.cc",
+    "src/base/metatrace.cc",
     "src/base/page_allocator.cc",
     "src/base/string_splitter.cc",
     "src/base/string_utils.cc",
@@ -144,6 +145,7 @@
     ":perfetto_src_perfetto_cmd_protos_gen",
     "src/base/android_task_runner.cc",
     "src/base/file_utils.cc",
+    "src/base/metatrace.cc",
     "src/base/page_allocator.cc",
     "src/base/string_splitter.cc",
     "src/base/string_utils.cc",
@@ -271,6 +273,7 @@
     ":perfetto_src_ipc_wire_protocol_gen",
     "src/base/android_task_runner.cc",
     "src/base/file_utils.cc",
+    "src/base/metatrace.cc",
     "src/base/page_allocator.cc",
     "src/base/string_splitter.cc",
     "src/base/string_utils.cc",
@@ -3454,6 +3457,7 @@
     ":perfetto_protos_perfetto_trace_zero_gen",
     ":perfetto_src_ipc_wire_protocol_gen",
     "src/base/file_utils.cc",
+    "src/base/metatrace.cc",
     "src/base/page_allocator.cc",
     "src/base/string_splitter.cc",
     "src/base/string_utils.cc",
@@ -3626,6 +3630,7 @@
     ":perfetto_src_protozero_testing_messages_zero_gen",
     "src/base/android_task_runner.cc",
     "src/base/file_utils.cc",
+    "src/base/metatrace.cc",
     "src/base/page_allocator.cc",
     "src/base/page_allocator_unittest.cc",
     "src/base/scoped_file_unittest.cc",